# Really Poor Network Performance

**URL:** <https://discuss.bluerobotics.com/t/really-poor-network-performance/16774>\
**Category:** Cameras\
**Created:** [May 1, 2024, 9:29pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774 "2024-05-01T21:29:31Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![jrooker](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@jrooker](https://discuss.bluerobotics.com/u/jrooker)\
**Post date:** [May 1, 2024, 9:29pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774/1 "2024-05-01T21:29:31Z")

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I am seeing incredibly bad network performance. The default camera stream does not transfer smoothly, it is constantly lagging.

Thoughts?

 ![image](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/c/c4b537227bbe8cf31f2a56b29bcade48f86c1d5b.png)

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**Author:** ![tony-white](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tony-white/32/13297_2.png) [@tony-white](https://discuss.bluerobotics.com/u/tony-white)\
**Post date:** [May 1, 2024, 10:55pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774/2 "2024-05-01T22:55:13Z")

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Hi @jrooker -  
Welcome to the forums!  
Can you share what length and type of tether you’re using? Have you verified continuity between the opposite ends of the tether at the Fathom-X to verify you have a good connection?

 ![image](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/2/2f7b156a25dc002384cd52c2bf7b14d021c430d8.jpeg)  
This is easy to do with a multimeter. If either Fathom-X has gotten wet, it may still function but with weird performance characteristics…

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**Author:** ![jrooker](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@jrooker](https://discuss.bluerobotics.com/u/jrooker)\
**Post date:** [May 2, 2024, 12:50pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774/3 "2024-05-02T12:50:35Z")

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Hi Tony, thanks for the help. It is the 300m tether. Neither have gotten wet. Do you have a specific OHM reading, or are we just checking for continuity? There is definitely continuity because I have comms stil…

I also wonder if it is heat related, as this morning when I powered up the ROV, the upload and download was ~25 Mbps. Still this is not a useful amount of bandwidth.

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**Author:** ![tony-white](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tony-white/32/13297_2.png) [@tony-white](https://discuss.bluerobotics.com/u/tony-white)\
**Post date:** [May 2, 2024, 4:03pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774/4 "2024-05-02T16:03:16Z")

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Hi @jrooker -  
300m standard tether with 4 twisted pairs?  
Checking continuity, and that resistance approximately matches specification:

 ![image](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/6/6e6dee515182125c467ca96721275627cf1264e2.png)

If you don’t measure ~38-42 ohms, you may want to try a different tether pair? Sometimes a pair can be damaged in use by tight kinks or high tension, which will impact the resistance…

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**Author:** ![jrooker](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@jrooker](https://discuss.bluerobotics.com/u/jrooker)\
**Post date:** [May 2, 2024, 4:39pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774/5 "2024-05-02T16:39:33Z")

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Yes with the 4 twisted pairs, although only a pair is used. I measured 41.1 Ohms

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**Author:** ![jrooker](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@jrooker](https://discuss.bluerobotics.com/u/jrooker)\
**Post date:** [May 2, 2024, 8:09pm UTC](https://discuss.bluerobotics.com/t/really-poor-network-performance/16774/6 "2024-05-02T20:09:20Z")

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Experienced the same problem today. After ~1 hour of operation, the BlueROV connection dropped. ~1500 ms ping times. No upload or download times from 192.168.2.2 web wizard network tester.  
Heres a vid of the proble: [Bad\_Network\_Bluerob.mp4 - Google Drive](https://drive.google.com/file/d/13xKcjQztdEx5rNrLzh7Xtw6_5gBWA13u/view?usp=sharing)

Battery levels were fine
